Just because no one has mentioned this yet: You do not have to actually kill the Greench to complete the quest. If he has been recently killed you can just run up & talk to Metezen, & pick up the treat bag from the cave!

Well it IS the first dog pet in the sense that it's just an actual dog. Not an existing warcraft beast. Which makes it even better as a pet, because there is nothing else like it in the game! It's also about time we got some K9 companionship... We have so many kitties O_O

With a pet biscuit, KT is my height *Is a human girl* including his headpiece.
He will not fetch a ball, be put on a leash, be fed pet snacks or a grooming kit. (I wanted him to be sparkley :( )
When he kills a critter not only do you hear the cute little evil laugh, but Big K.T's booming laugh as well!
He's a very well detailed pet, with buck teeth & large blue eyes!